/*
 * To change this template, choose Tools | Templates
 * and open the template in the editor.
 */
package br.com.ufpb.halloc.servlet;

import br.com.ufpb.halloc.dados.UsuarioDAO;
import br.com.ufpb.halloc.negocio.Usuario;
import java.io.IOException;
import java.util.logging.Level;
import java.util.logging.Logger;
import javax.servlet.ServletException;
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpSession;
import javax.swing.JOptionPane;

/**
 *
 * @author Kawe Ramon
 */
@WebServlet(name = "processaLogin", urlPatterns = {"/validaLogin.do"})
public class ValidaLoginServlet extends HttpServlet {

    /** 
     * Processes requests for both HTTP <code>GET</code> and <code>POST</code> methods.
     * @param request servlet request
     * @param response servlet response
     * @throws ServletException if a servlet-specific error occurs
     * @throws IOException if an I/O error occurs
     */
    protected void processRequest(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {
        response.setContentType("text/html;charset=UTF-8");
        
        UsuarioDAO userDAO;
        String login = request.getParameter("login");
        String senha = request.getParameter("senha");
        
        boolean resultado = false;
        try {
            userDAO = UsuarioDAO.getInstance();
            resultado = userDAO.getUsurario(login, senha);
            
        } catch (Exception e) {
            Logger.getLogger(ValidaLoginServlet.class.getName()).log(Level.SEVERE, null, e);        
        }
        
        if (resultado) {
            JOptionPane.showMessageDialog(null, "Login correto");
            request.getRequestDispatcher("Principal.jsp").forward(request, response);
        } else {
            JOptionPane.showMessageDialog(null, "login errado");
            request.setAttribute("mensagem", "Login errado");
            response.sendRedirect("login.html");
        }
        
        
    }

    // <editor-fold defaultstate="collapsed" desc="HttpServlet methods. Click on the + sign on the left to edit the code.">
    /** 
     * Handles the HTTP <code>GET</code> method.
     * @param request servlet request
     * @param response servlet response
     * @throws ServletException if a servlet-specific error occurs
     * @throws IOException if an I/O error occurs
     */
    @Override
    protected void doGet(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {
        processRequest(request, response);
    }

    /** 
     * Handles the HTTP <code>POST</code> method.
     * @param request servlet request
     * @param response servlet response
     * @throws ServletException if a servlet-specific error occurs
     * @throws IOException if an I/O error occurs
     */
    @Override
    protected void doPost(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {
        processRequest(request, response);
    }

    /** 
     * Returns a short description of the servlet.
     * @return a String containing servlet description
     */
    @Override
    public String getServletInfo() {
        return "Short description";
    }// </editor-fold>
}
